diff --git a/IO.cpp b/IO.cpp
index 068a2e1..bbea122 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -62,6 +62,7 @@ m_dstarTXLevel(128 * 128),
 m_dmrTXLevel(128 * 128),
 m_ysfTXLevel(128 * 128),
 m_p25TXLevel(128 * 128),
+m_rxDCOffset(DC_OFFSET),
 m_txDCOffset(DC_OFFSET),
 m_ledCount(0U),
 m_ledValue(true),
@@ -240,7 +241,7 @@ void CIO::process()
       if (m_detect && (sample == 0U || sample == 4095U))
         m_adcOverflow++;
 
-      q15_t res1 = q15_t(sample) - DC_OFFSET;
+      q15_t res1 = q15_t(sample) - m_rxDCOffset;
       q31_t res2 = res1 * m_rxLevel;
       samples[i] = q15_t(__SSAT((res2 >> 15), 16));
     }
@@ -419,7 +420,7 @@ void CIO::setMode()
 #endif
 }
 
-void CIO::setParameters(bool rxInvert, bool txInvert, bool pttInvert, uint8_t rxLevel, uint8_t cwIdTXLevel, uint8_t dstarTXLevel, uint8_t dmrTXLevel, uint8_t ysfTXLevel, uint8_t p25TXLevel, int16_t txDCOffset)
+void CIO::setParameters(bool rxInvert, bool txInvert, bool pttInvert, uint8_t rxLevel, uint8_t cwIdTXLevel, uint8_t dstarTXLevel, uint8_t dmrTXLevel, uint8_t ysfTXLevel, uint8_t p25TXLevel, int16_t txDCOffset, int16_t rxDCOffset)
 {
   m_pttInvert = pttInvert;
 
@@ -430,6 +431,7 @@ void CIO::setParameters(bool rxInvert, bool txInvert, bool pttInvert, uint8_t rx
   m_ysfTXLevel   = q15_t(ysfTXLevel * 128);
   m_p25TXLevel   = q15_t(p25TXLevel * 128);
 
+  m_rxDCOffset   = DC_OFFSET + rxDCOffset;
   m_txDCOffset   = DC_OFFSET + txDCOffset;
   
   if (rxInvert)
diff --git a/IO.h b/IO.h
index 64fb1d9..48373ec 100644
--- a/IO.h
+++ b/IO.h
@@ -42,7 +42,7 @@ public:
   
   void interrupt();
 
-  void setParameters(bool rxInvert, bool txInvert, bool pttInvert, uint8_t rxLevel, uint8_t cwIdTXLevel, uint8_t dstarTXLevel, uint8_t dmrTXLevel, uint8_t ysfTXLevel, uint8_t p25TXLevel, int16_t txDCOffset);
+  void setParameters(bool rxInvert, bool txInvert, bool pttInvert, uint8_t rxLevel, uint8_t cwIdTXLevel, uint8_t dstarTXLevel, uint8_t dmrTXLevel, uint8_t ysfTXLevel, uint8_t p25TXLevel, int16_t txDCOffset, int16_t rxDCOffset);
 
   void getOverflow(bool& adcOverflow, bool& dacOverflow);
 
@@ -81,6 +81,7 @@ private:
   q15_t                m_ysfTXLevel;
   q15_t                m_p25TXLevel;
 
+  uint16_t             m_rxDCOffset;
   uint16_t             m_txDCOffset;
 
   uint32_t             m_ledCount;
diff --git a/SerialPort.cpp b/SerialPort.cpp
index 44a8f17..e55769d 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -221,7 +221,7 @@ void CSerialPort::getVersion()
 
 uint8_t CSerialPort::setConfig(const uint8_t* data, uint8_t length)
 {
-  if (length < 14U)
+  if (length < 15U)
     return 4U;
 
   bool rxInvert  = (data[0U] & 0x01U) == 0x01U;
@@ -269,6 +269,7 @@ uint8_t CSerialPort::setConfig(const uint8_t* data, uint8_t length)
   uint8_t p25TXLevel   = data[12U];
 
   int16_t txDCOffset = int16_t(data[13U]) - 128;
+  int16_t rxDCOffset = int16_t(data[14U]) - 128;
 
   m_modemState  = modemState;
 
@@ -291,7 +292,7 @@ uint8_t CSerialPort::setConfig(const uint8_t* data, uint8_t length)
 
   ysfTX.setLoDev(ysfLoDev);
 
-  io.setParameters(rxInvert, txInvert, pttInvert, rxLevel, cwIdTXLevel, dstarTXLevel, dmrTXLevel, ysfTXLevel, p25TXLevel, txDCOffset);
+  io.setParameters(rxInvert, txInvert, pttInvert, rxLevel, cwIdTXLevel, dstarTXLevel, dmrTXLevel, ysfTXLevel, p25TXLevel, txDCOffset, rxDCOffset);
 
   io.start();